TUFLOW 1D Channels and Hydraulic Structures: Difference between revisions

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==Why is the maximum 1D water level higher than 2D water level?==
TUFLOW calculates storage at 1D nodes (including manholes) and calculates flux at pipe mid-sections. The storages at the manholes are saved in the format of ‘elevation vs nodal area’ tables, which you can checkbe reviewed fromin the .eof file:<br>
[[File:1DpitHmax 1.png]] <br>
 
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[[File:1DpitHmax 2.png | 300px ]] <br>
 
TUFLOW extends the ‘elevation vs nodal area’ table by 5 m (the last 2 numbers in the table above), which allows for the calculation of pressurised pipe flow when a manhole is drawndrowned. If the maximum 1D water level is higher than the demDEM, that means the manhole was drawndrowned and pressurised during the peak of the flood. <br>
[[File:1DpitHmax 3.png | 300px ]] <br>